ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - CHANGES IN AOCI BY COMPONENT (Details) - USD ($) $ in Millions		3 Months Ended				4 Months Ended		6 Months Ended
		Aug. 15, 2020	Feb. 01, 2020	Nov. 09, 2019	Aug. 17, 2019	May 23, 2020	May 25, 2019	Aug. 15, 2020	Aug. 17, 2019
Accumulated other comprehensive income (loss)
Balance at the beginning of the period						$ 8,602		$ 8,602
Cumulative effect of accounting change	[1]								$ (146)
Amounts reclassified out of AOCI		$ 4			$ 10			8	18
Total other comprehensive income (loss)		7	$ (145)	$ 42	(45)	(18)	$ (146)	(11)	(191)
Balance at the end of the period		9,820	8,602					9,820
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive income (loss)
Balance at the beginning of the period				(537)		(640)	(346)	(640)	(346)
Cumulative effect of accounting change									(146)
OCI before reclassifications								(19)	(63)
Amounts reclassified out of AOCI								8	18
Total other comprehensive income (loss)		7	(145)	42	(45)	(18)	(146)	(11)	(191)
Balance at the end of the period		(651)	(640)		(537)			(651)	(537)
Cash Flow Hedging Activities
Accumulated other comprehensive income (loss)
Balance at the beginning of the period				(60)		(42)	6	(42)	6
Cumulative effect of accounting change									(5)
OCI before reclassifications								(19)	(63)
Amounts reclassified out of AOCI								2	2
Total other comprehensive income (loss)								(17)	(66)
Balance at the end of the period		(59)	(42)		(60)			(59)	(60)
OCI before reclassifications, tax								(10)	(26)
Amounts reclassified out of AOCI, tax								1	2
Pension and Postretirement Defined Benefit Plans
Accumulated other comprehensive income (loss)
Balance at the beginning of the period				$ (477)		$ (598)	$ (352)	(598)	(352)
Cumulative effect of accounting change									(141)
Amounts reclassified out of AOCI		3			9			6	16
Total other comprehensive income (loss)								6	(125)
Balance at the end of the period		(592)	$ (598)		(477)			(592)	(477)
Amounts reclassified out of AOCI, tax		$ 1			$ 2			$ 3	$ 5

[1] Related to the adoption of Accounting Standards Update (“ASU”) 2018-02, "Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income."